// Copyright 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef GPU_COMMAND_BUFFER_SERVICE_GPU_STATE_TRACER_H_
#define GPU_COMMAND_BUFFER_SERVICE_GPU_STATE_TRACER_H_

#include "base/basictypes.h"
#include "base/memory/scoped_ptr.h"

namespace gfx {
class Size;
}

namespace gpu {
namespace gles2 {

    struct ContextState;

    // Saves GPU state such as framebuffer contents while tracing.
    class GPUStateTracer {
    public:
        static scoped_ptr<GPUStateTracer> Create(const ContextState* state);
        ~GPUStateTracer();

        // Take a state snapshot with a screenshot of the currently bound framebuffer.
        void TakeSnapshotWithCurrentFramebuffer(const gfx::Size& size);

    private:
        explicit GPUStateTracer(const ContextState* state);

        const ContextState* state_;
        DISALLOW_COPY_AND_ASSIGN(GPUStateTracer);
    };

} // namespace gles2
} // namespace gpu

#endif // GPU_COMMAND_BUFFER_SERVICE_GPU_STATE_TRACER_H_
